Extra Information

The V1638 is a broadcast quality analog audio distribution amplifier which forms part of the Vistek V1600
range of interface products. It is a 3U high card which is fitted into either a V1601 or V1603 rack, from
which it receives its power. The V1638 is fully controllable by the DART remote control interface and either
the V1605 remote control panel or the Vistek ViewFind PC-based host. . A passive rear module with screw
terminal connections, is required for all signal interconnections. Rear assemblies with screw terminal
connectors providing 8 outputs and rear modules with D-sub connectors providing 10 outputs are available.
The unit accepts two differential mono audio inputs and distributes each of these signals to 5 differential
mono outputs. The card can therefore be used as a stereo 1:5 distribution amplifier. Modes whereby either
input or the sum of both inputs is distributed to 10 outputs are provided and are selected by on-board DIL
switches or the DART remote control interface.
The V1638 has 2 population options:
The base version has direct balanced inputs and outputs intended for local distribution applications.
The line version has transformer coupling on both inputs. On either version input impedance may be set to
600Ω or 20kΩ by means of on-board jumpers.

INPUTS:
Base version: 2 x balanced analog channels, Zin = 20kΩ or 600Ω, max input 28dBu
Line version: 2 x transformer coupled channels, Zin = 20kΩ or 600Ω, max recommended input
is +20dBu

OUTPUTS:
Monitoring: 3.5mm Stereo jack socket -18dBu into 600Ω w.r.t. main outputs
Main outputs: 2x5 x balanced analog channels, Zout £ 50Ω, max output 28dBu into 10kΩ

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